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DB2 - Problembeschreibung

Problem IC79105 Status: Geschlossen

CLIENT MIGHT SEGV (CRASH) IN SQLEUCFREEDIAGINFO() DUE TO DEREFERENCING AN
ALREADY FREED MEMORY

Produkt:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problembeschreibung:
Client process, like dsmserv, can SEGV (crash) with the 
following stack trace: 
 
  sqleUCfreeDiagInfo() 
  sqleuResetUCintfc() 
  [sqleUCinitUCintfc()] 
  sqleUCappConnect() 
  sqleStartUsingDatabase() 
  sqlubConnectDatabase() 
  db2Backup() 
  DB2BackupThread() 
  StartThread() 
 
The function in '[]' will or not show up depending on the 
compiler that was used. 
 
The crash would happen in sqleUCfreeDiagInfo() because we are 
trying to dereference 
memory that is pointing to freed (and possibly reused) memory. 
This might happen if a previous connection attempt would have 
failed.
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* Client process, like dsmserv, can SEGV (crash) with the      * 
* following stack trace:                                       * 
*                                                              * 
*   sqleUCfreeDiagInfo()                                       * 
*   sqleuResetUCintfc()                                        * 
*   [sqleUCinitUCintfc()]                                      * 
*   sqleUCappConnect()                                         * 
*   sqleStartUsingDatabase()                                   * 
*   sqlubConnectDatabase()                                     * 
*   db2Backup()                                                * 
*   DB2BackupThread()                                          * 
*   StartThread()                                              * 
*                                                              * 
* The function in '[]' will or not show up depending on the    * 
* compiler that was used.                                      * 
*                                                              * 
* The crash would happen in sqleUCfreeDiagInfo() because we    * 
* are                                                          * 
* trying to dereference                                        * 
* memory that is pointing to freed (and possibly reused)       * 
* memory.                                                      * 
* This might happen if a previous connection attempt would     * 
* have                                                         * 
* failed.                                                      * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 UDB version 9.7 fixpack 6.                    * 
****************************************************************
Local-Fix:
verfügbare FixPacks:
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows

Lösung
Problem was first fixed in DB2 UDB Version 9.7 Fix Pack 6.
Workaround
keiner bekannt / siehe Local-Fix
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
06.10.2011
11.06.2012
11.06.2012
Problem behoben ab folgender Versionen (IBM BugInfos)
9.7.FP6
Problem behoben lt. FixList in der Version
9.7.0.6 FixList